package com.kunminx.core.myUtils.scheduler;

import io.reactivex.Scheduler;
import ohos.eventhandler.EventHandler;
import ohos.eventhandler.EventRunner;

/**
 * HmOs-specific Schedulers.
 * <p>
 * Copyright (C) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
public final class HmOSSchedulers {
    private static final Scheduler MAIN_THREAD = RxHmOSPlugins.initMainThreadScheduler(
            () -> MainHolder.DEFAULT);

    public static Scheduler mainThread() {
        return RxHmOSPlugins.onMainThreadScheduler(MAIN_THREAD);
    }

    public static Scheduler from(EventRunner eventRunner) {
        if (eventRunner == null) {
            throw new NullPointerException("eventRunner == null");
        }
        return new HandlerScheduler(new EventHandler(eventRunner));
    }

    private HmOSSchedulers() {
        throw new AssertionError("No instances.");
    }

    private static final class MainHolder {
        static final Scheduler DEFAULT = new HandlerScheduler(new EventHandler(EventRunner.getMainEventRunner()));
    }

}